Home / 142,021.02-196,000.73-81,603.33

Finding the Fourth Proportional to 142,021.02, 196,000.73 and 81,603.33

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Solution

The fourth proportional to 142,021.02, 196,000.73 and 81,603.33 is: 112,619.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,021.02 : 196,000.73 = 81,603.33 : x
  2. Step 2: Convert to fraction form
    142,021.02/196,000.73 = 81,603.33/x
  3. Step 3: Cross multiply
    142,021.02x = 196,000.73 × 81,603.33
  4. Step 4: Simplify right side
    142,021.02x = 15,994,312,250.43
  5. Step 5: Solve for x
    x = 15,994,312,250.43/142,021.02
  6. Step 6: Final answer
    x = 112,619.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.